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EcoShard GIS data

Project description

This module is used to ecoshard sets of files.


python -m ecoshard \[original\_file\] --hashalg md5 --rename

(creates an ecoshard from original file with the md5 hash algorithm and renames the result rather than creating a new copy)

python -m ecoshard *.tif --compress --buildoverviews

(does a GIS compression of all *.tif files in the current directory and builds overviews for them and renames the result rather than making a new copy. Here if –rename had been passed an error would have been raised because rasters cannot be in-place compressed. The target output files will have the format [original_filename]_compressed_[hashalg]_[ecoshard][fileext])

python -m ecoshard *.tif --compress --buildoverviews --upload

(does the previous operation but also uploads the results to gs://ecoshard-root/working-shards and reports the target URLs to stdout)

python -m ecoshard *.tif ./outputs/*.tif --validate

(searches the .tif and ./outputs/.tif globs for ecoshard files and reports whether their hashes are valid or not)

Release History

0.3.0 (2019/09/26)

  • Added a new command line mode –reduce_factor that reduces the number of pixels in a raster by that integer amount. Ex:

    python -m ecoshard base.tif --reduce_factor 4 max target.tif

    this call makes the size of the pixels in base.tif 4 times larger on the edge, thus reducing the total size of the image by 16 times, the convolution upsample is done with a “max” and the output file is target.tif. The modes “min”, “max”, “sum”, “average”, “mode” are available.

0.2.2 (2019/09/24)

  • Added a download_url function to ecoshard to fetch files via http(s).
  • Developing Flask module to visualize ecoshards.

0.2.1 (2019/06/28)

  • Hotfix: gs to gsutil for copying to buckets.

0.2.0 (2019/06/28)

  • Added functionality to download a url.
  • Added functionality to copy to a google bucket.
  • Fixed an issue on functions that should write a token file but didn’t.

0.1.1 (2019/06/27)

  • Added a --force flag to the command line utility.

0.0.2 (2019/06/26)

  • Initial release.

Project details

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